Using Lists as a Queue : queue « Collections « Python Tutorial

1. Python Tutorial
2. Collections
3. queue

queue = []

def enQ():
    queue.append("A")

def deQ():
    if len(queue) == 0:
         print 'Cannot pop from an empty queue!'
    else:
        print 'Removed [', 'queue.pop(0)', ']'

def viewQ():
    print queue       # calls str() internally

enQ()
viewQ()

deQ()
viewQ()